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231.

The basic factor which controls the process of meandering is

A.	discharge	B.	valley slope
C.	bed and side resistance	D.	all of these

232.

When river flows in a plain country, its stage is known as

A.	delta	B.	boulder
C.	trough	D.	rocky

233.

Which of the following statements is correct?

A.	The aggrading type of river builds up its bed to a certain slope.	B.	The degrading type of river looses its bed gradually in the form of sediment load of the stream.
C.	The pattern of meander is altered by variation in discharge slope and bed forming material	D.	all of the above

234.

The width and length of mender as well as width of river, vary approximately with

A.	discharge	B.	square of discharge
C.	square root of discharge	D.	cube root of discharge

235.

The river training works are adopted on a river

A.	to pass high flood discharge safely and quickly through the breach	B.	to direct and guide the river flow
C.	to reduce bank erosion to a minimum	D.	all of the above

236.

The method used for training of rivers is

A.	guide bank	B.	dyke or levee
C.	groyne	D.	all of these

237.

A river training work is generally required when the river is

A.	aggrading type	B.	degrading type
C.	meandering type	D.	stable type

238.

A groyne is a structure constructed transverse to the river flow and extend from the bank into the river upto a certain limit.

Agree

Disagree

239.

A groyne

A.	contracts a river channel to improve its depth	B.	silts up the area in the vicinity by creating a slack flow
C.	trains the flow along a certain course	D.	all of the above

240.

The repelling groyne is constructed in such a way that it is pointing towards

upstream

downstream